See Linking Pages in Google Analytics - Traffic Source Analysis

Identifying Landing Pages from Specific Traffic Sources in Google Analytics
Are you analyzing your Google Analytics data and observing a significant volume of traffic originating from a specific source? Determining the exact pages receiving these visits can sometimes be challenging.
While the Top Content report often highlights unusual view counts, pinpointing the specific landing pages isn't always straightforward.
Fortunately, a simple method exists to uncover this information, though it isn't immediately apparent to all users.
Using the Segment Feature
Let's illustrate this process using StumbleUpon traffic as an example. Begin by selecting StumbleUpon from the list of traffic sources within Google Analytics.
Next, utilize the "Segment" drop-down menu and choose "Landing Page."
This action will generate a clear, organized list detailing all the pages to which StumbleUpon directed visitors.
Discovering Unexpected Traffic Patterns
In this instance, the report readily revealed increased pageviews to the "Copy Windows Drivers" article.
Without this specific report, it would have been difficult to recognize that StumbleUpon users were also exploring other pages on the site.
This method allows for a more granular understanding of how different traffic sources interact with your website's content.